Homework Help: Math

Posted by Eli on Monday, May 30, 2011 at 10:33am.

A pyramid is inscribed in a cube whose volume is 52pi cm^3. The volume of a sphere is equal tpo the volume of this pyramid. Find the volume of a second cube whose edge is equal to the radius of the sphere.

Math - Henry, Monday, May 30, 2011 at 12:35pm
V = (4pi/3)r^3 = 52pi cm^3.
Divide both sides by 4pi/3:
r^3 = 39,
r = 3.39cm = a side of cube,

V = (3.39)^3 = 39cm^3 = volume of cube.

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